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US 2001/0027386 A1Published application
Time-domain circuit modeller
AssigneeU.S. Philips Corporation
InventorROBERT F. MILSOM
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AssigneeU.S. Philips Corporation
InventorROBERT F. MILSOM
Estimating the term…
A method of, and apparatus for, obtaining a representation of an electrical circuit (400) suitable for time-domain simulation. The electrical circuit comprises a physical structure (102), which is modelled using electromagnetic field analysis, and also comprises a remainder circuit (104) of circuit components which are interconnected with the physical structure. The electromagnetic field analysis is capable of generating at least a high-frequency equivalent circuit which is representative of the physical structure (102) and is valid at the operating frequency of the circuit but not at DC. The method comprises including a set of DC sources ( E1 to Ek) to ensure that, in a time-domain simulation, improved DC bias conditions are provided for any non-linear components in the remainder circuit. The DC sources may be voltage sources in each interconnection, current sources between each interconnection and a zero voltage reference interconnection, or a combination of the two.
A method of obtaining a representation of an electrical circuit suitable for time-domain simulation, the electrical circuit comprising a physical structure, which is modelled using electromagnetic field analysis, and also comprising a remainder circuit of circuit components which are interconnected with the physical structure, the electromagnetic field analysis being capable of generating at least a high-frequency equivalent circuit which is representative of the physical structure and is valid at the operating frequency of the circuit but not at DC, characterised by the step of including a set of DC sources to ensure that, in a time-domain simulation, improved DC bias conditions are provided for any non-linear components in the remainder circuit.
An apparatus comprising a circuit modeller for obtaining a representation of an electrical circuit suitable for time-domain simulation, wherein the circuit modeller uses electromagnetic field analysis to model a physical structure of the electrical circuit, the electrical circuit also comprising a remainder circuit of circuit components which are interconnected with the physical structure, the electromagnetic field analysis being capable of generating at least a high-frequency equivalent circuit which is representative of the physical structure and is valid at the operating frequency of the circuit but not at DC, characterised in that the circuit modeller provides for the addition of a set of DC sources to the electrical circuit between the physical structure and the remainder circuit to ensure that, in a time-domain simulation, improved DC bias conditions are provided for any non-linear components in the remainder circuit.
Dependencies are inferred from the claim text.